Iodine and iodate determination by a new spectrophotometric method usingN,N-dimethyl-p-phenylenediamine, validated in veterinary supplements and table salt

Araya, Michael; García, Samantha; Pizarro, Sebastián

doi:10.1039/c9ay02249j

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…Therefore, to ensure that the correct amounts of iodate are added in table salt, the sensitive and rapid quantitative determination is of great importance to preventing thyroid diseases. 22,23 Several analytical techniques, such as spectrophotometry, 24 flame atomic absorption spectrometry (FAAS), 25 chemiluminescence 26 and gas chromatography-mass spectrometry 27 have been used for iodate sensing. However, most of these methods are not suitable for routine analysis as they required expensive equipment and some of them are based on indirect reactions where species with appropriate characteristics have to be produced for quantitative detection of the target analyte.…”

Section: Introductionmentioning

confidence: 99%

Ruthenium Oxide Hexacyanoferrate as an Effective Electrode Modifier for Amperometric Detection of Iodate and Hydrogen Peroxide

Dodevska

Shterev

Lazarova

et al. 2020

ACSi

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Ruthenium oxide hexacyanoferrate (RuOHCF) film was electrochemically deposited onto a glassy carbon (GC) surface using consecutive cyclic voltammetry as a facile and green synthetic strategy. The electrochemical behaviour and electrocatalytic properties of the modified electrode RuОHCF/GC were evaluated with regards to electroreduction of hydrogen peroxide and iodate in a strong acidic medium (pHs 1.0–2.0) by using different electrochemical techniques, including cyclic voltammetry and amperometry at a constant potential. Electrochemical studies indicated that RuОHCF/GC possess a high catalytic activity in both studied reactions, fast response and good reproducibility of the current signal. The RuОHCF/GC exhibits enhanced electrocatalytic behaviour compared with other modified electrodes reported before. The simple and reproducible procedure for electrode fabrication, the wide linear range, anti-interference performance and long-time stability of the RuОHCF/GC make it a promising sensing material for practical quantitative determination of hydrogen peroxide and iodate. Remarkably, the reported modified electrode provided superior sensitive (1050 μA mM–1 cm–2) and highly selective amperometric detection of iodate.

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Section: Introductionmentioning

confidence: 99%

Ruthenium Oxide Hexacyanoferrate as an Effective Electrode Modifier for Amperometric Detection of Iodate and Hydrogen Peroxide

Dodevska

Shterev

Lazarova

et al. 2020

ACSi

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Hybrid photo paper-based microfluidic device for colorimetric detection of iodine in salt

Chong,

Sriv,

Chey

et al. 2024

Discov Appl Sci

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Microfluidic paper-based analytical devices (µPADs) have gained widespread use in various analytical applications because they are low-cost and suitable for onsite testing. The development of µPADs, including fabrication methods, new materials, and enhancement functionality is crucial to advance their practical application in analytical chemistry. In this study, we introduce a new hybrid paper-based analytical device, the hybrid photo paper-based microfluidic device (hPPMD), which combines a photo paper-based microfluidic device (PPMD) with a µPAD. We conducted a systematic study that detailed hPPMD’s characteristics, including surface properties and fluidic transportation. The hPPMD showed two fluidic transportation behaviors: continuous flow and discontinuous flow at the device junction, depending on the orientation of the device combination. Our hPPMD could increase fluidic flow approximately four times the speed when six layers of guided channels were added. The customized hPPMD was used for colorimetric detection of iodine in table salt, and then the result was quantitatively analyzed using a computer and smartphone with color analysis software. The detection zones of the hPPMD showed a flawless circular color signal. Under optimum conditions, the hPPMD was sensitive enough to detect iodine in salt solutions at various concentrations ranging from 1 to 100 ppm. The developed hPPMD should be a simple and low-cost analytical device for onsite qualitative analysis of the iodine and other chemical contaminants in food and the environment.

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Dispersive liquid–liquid microextraction and diffuse reflectance-Fourier transform infrared spectroscopy for iodate determination in food grade salt and food samples

Gupta¹,

Jain

Verma

2022

Food Chemistry

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Iodine and iodate determination by a new spectrophotometric method usingN,N-dimethyl-p-phenylenediamine, validated in veterinary supplements and table salt

Abstract: A new spectrophotometric method has been developed for the determination of iodate through the in situ production of iodine.

Cited by 5 publications

References 24 publications

Ruthenium Oxide Hexacyanoferrate as an Effective Electrode Modifier for Amperometric Detection of Iodate and Hydrogen Peroxide

Ruthenium Oxide Hexacyanoferrate as an Effective Electrode Modifier for Amperometric Detection of Iodate and Hydrogen Peroxide

Hybrid photo paper-based microfluidic device for colorimetric detection of iodine in salt

Dispersive liquid–liquid microextraction and diffuse reflectance-Fourier transform infrared spectroscopy for iodate determination in food grade salt and food samples

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